Marine Interpretation Message
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000
AGPN40 KWNM 230753
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1253 AM PDT TUE SEP 23 2014

.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT
.WEATHER FOR THE NORTH PACIFIC N OF 30N AND E OF 150W.

SAT PIX INDICATES A VERY STRONG SYSTEM IS APPROACHING THE OFFSHORE
WATERS. SCAT PASS FROM 05Z SHOWS GALES INADV OF CLDFNT WHICH SEEM
TO MATCH UP WELL WITH 00Z GFS RUN. EXPECT CONDITIONS TO BE ON THE
INCREASE TODAY AS SYSTEM APPROACHES. MARGINAL GALES ARE STILL
LIKELY INADV OF FRONTAL BNDRY...ALTHOUGH THE STRONGEST CONDITIONS
WILL OCCUR ONCE THE FRONT CROSSES THE WATERS. THE LOW WILL REACH
ITS PEAK STRENGTH IN ABOUT 12 HRS...THEN SLOWLY WEAKEN AS SYSTEM
NEARS WATERS. THE LOW SHOULD REACH APPROX 135W BEFORE TURNING TO
THE N. EVEN THOUGH THE CENTER OF THE SYSTEM WONT REACH THE
OFFSHORE WATERS EXPECT MAX WINDS TO REACH 40 KT OVER THE OUTER
WATERS WHILE SEAS BUILD TO THE MID 20`S WITH SIG SWELL. THE GLOBAL
MODELS AREA ALL IN VERY GOOD AGREEMENT OVER THE NEXT 3 DAYS OR
SO...THEN BEGIN TO DIVERGE SOMEWHAT AS SOME OF THE MODELS DIG SOME
ENERGY SE INTO THE CENTRAL CA WATERS...WHILE OTHERS KEEP THE BULK
OF THE ENERGY FURTHER N. I PLAN ON KEEPKING CONTINUITY FROM PRIOR
FCSTS AND WILL POP GRIDS WITH 30M GFS THROUGHOUT THE PERIOD. GIVEN
THE ALREADY IMPRESSIVE SCAT PASS THE 30M WINDS MIGHT WORK OUT
ALRIGHT. MY CONFIDENCE IS HIGHER WITH THE POST FRONTAL CONDITIONS
THAN WITH THE INITIAL SRLY FLOW INADV OF COLDFRONT HOWEVER.
ALTHOUGH STILL EXPECT SOME GALE WINDS TO MIX TO SURFACE...EVEN
PRE-FRONTAL. THE ENP WAVE FORECAST LOOKS REASONABLE AND WILL USE
WHEN POP THE WAVE GRIDS. THE ECMWF WAVE FCST IS A TAD HIGH IN
SPOTS.

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ800...INNER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE TUE.
     GALE POSSIBLE WED.
.PZZ900...OUTER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE TUE INTO TUE NIGHT.
     GALE POSSIBLE WED.
.PZZ905...OUTER WATERS FROM CAPE SHOALWATER TO CAPE LOOKOUT...
     GALE TUE INTO TUE NIGHT.
     GALE POSSIBLE WED.
.PZZ910...OUTER WATERS FROM CAPE LOOKOUT TO FLORENCE OR...
     GALE TUE INTO TUE NIGHT.
.PZZ815...INNER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
     GALE TUE.
.PZZ915...OUTER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
     GALE TUE INTO TUE NIGHT.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER SHAW. OCEAN PREDICTION CENTER.



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